| Term | Definition |
|---|
| simple diffusion, facilitated diffusion, and osmosis | What are the 3 types of passive transport? |
| passive transport | A movement of molecules across a cell that does not require ATP |
| integral proteins, lipid bilayer, hydrophilic , hydrophobic | Cell membrane consists of? |
| polar | Is hydrophilic polar or nonpolar? |
| nonpolar | Is hydrophobic polar or nonpolar? |
| lipid bilayer | Houses proteins and limits what goes in/out |
| hydrophilic | Easily passes through lipid bilayer |
| hydrophobic | Cannot pass through lipid bilayer |
| diffusion | Movement of molecules from an area of higher concentration to an area of lower concentration |
| concentration gradient | Diffusion occurs on what type of gradient? |
| concentration gradient | Relative density of one chemical substance vs another |
| steepness of concentration gradient, temperature, charge, and diameter of diffusing molecules | Rate of diffusion depends on? |
| equilibrium | Diffusion ends when what has been met? |
| facilitated diffusion | Passive transport down concentration gradient with the aid of special transport proteins |
| no energy required | Does facilitated need energy? |
| protein changes shape to allow the molecule to pass through | What happens when the molecule enters the protein channel? |
| protein | What facilitates the molecule to pass through the plasma membrane? |
| osmosis | Passage of water across a membrane of higher concentration to an area of low concentration |
| Isotonic, hypotonic, and hypertonic | What are the 3 effects osmosis solutions on cells? |
| isotonic | No net gain or water loss |
| hypotonic | Net gain of water into ==>cell |
| hypertonic | Net flow out of <== cell |
| hypotonic | Low solute |
| hypertonic | High solute |
| hypotonic; hypertonic | Water will travel my osmosis from a _____ environment to a _____ environment. |
| filtration | Fluid filter between cells of through cells due to high hydrostatic pressure to low hydrostatic pressure |
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